#include<stdio.h>
#include<stdlib.h>

char * strcpy(char * src)
{
	if(src==NULL)
		return 0;
	char * a;
	int i=0;
	a=(char *)malloc(sizeof(src));
	while(src[i]!='\0')
	{
		a[i]=src[i];
		i++;
	}
	a[i+1]='\0';
	return a;
}
